Cheap flights from Seattle, WA to San José, Costa Rica
Flights starting at $175. Choose between Alaska Airlines, Spirit Airlines, or Avianca to find the best price.
One search, all the flights
We find you the best flight deals and travel hacks so that you can choose how to book.
Rise above all travel anxieties
With the Kiwi.com Guarantee we have your back with whatever happens.
Trusted by millions
Join over 10 million yearly travellers booking with ease.
Tips to know when travelling to San José
Cheapest one-way trip | $175 |
---|---|
Cheapest round-trip | $468 |
Average round-trip | $592 |
Includes rare itinerary | |
Most popular airline | Alaska Airlines |
Receive exclusive deals by email
By subscribing you agree to receive offers according to the conditions described in our Privacy Policy.
Travelers usually depart from Seattle–Tacoma International, or Kenmore Air Harbor Seaplane Base when they travel from Seattle to San José. The most popular airlines for this route are Alaska Airlines, Spirit Airlines, Avianca, United Airlines, and Frontier Airlines. Seattle and San José have 351 direct flights per week. When you arrive at San José, consider visiting Bosque Nuboso Monteverde, and Parque Nacional Manuel Antonio.
Check-in for a flight from Seattle to San José
Name | Carrier code | IATA Code | Passport needed during booking | |
---|---|---|---|---|
Alaska Airlines | ASA | AS | No | |
Spirit Airlines | NKS | NK | No | |
Avianca | AVA | AV | No | |
United Airlines | UAL | UA | Yes | |
Frontier Airlines | FFT | F9 | No |
Online check-in is not available for these airlines.
Weather in San José
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 24°C | 14°C |
February | 26°C | 14°C |
March | 27°C | 15°C |
April | 26°C | 16°C |
May | 25°C | 17°C |
June | 24°C | 16°C |
July | 24°C | 16°C |
August | 24°C | 15°C |
September | 24°C | 16°C |
October | 23°C | 16°C |
November | 23°C | 15°C |
December | 23°C | 15°C |
14 day forecast
Frequently asked questions
Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.
Explore alternative trips
Flights from Seattle
- Flights from Seattle to Denver
- Flights from Seattle to Las Vegas
- Flights from Seattle to Mexico City
- Flights from Seattle to Orlando
- Flights from Seattle to Atlanta
- Flights from Seattle to Austin
- Flights from Seattle to London
- Flights from Seattle to Houston
- Flights from Seattle to Paris
- Flights from Seattle to Barcelona
- Flights from Seattle to Rome
- Flights from Seattle to Los Angeles
- Flights from Seattle to Phoenix
- Flights from Seattle to Washington, D.C.
- Flights from Seattle to Detroit
- Flights from Seattle to Madrid
- Flights from Seattle to Dublin
- Flights from Seattle to Minneapolis
- Flights from Seattle to Cleveland
- Flights from Seattle to Guadalajara
Flights to San José
- Flights from Guatemala City to San José
- Flights from Charlotte to San José
- Flights from Liberia to San José
- Flights from Cancún to San José
- Flights from Mexico City to San José
- Flights from Tambor to San José
- Flights from Panama to San José
- Flights from Los Angeles to San José
- Flights from New York to San José
- Flights from Denver to San José
- Flights from Tijuana to San José
- Flights from Quepos to San José
- Flights from Bogotá to San José
- Flights from Tamarindo to San José
- Flights from Cincinnati to San José
- Flights from Asheville to San José
- Flights from Minneapolis to San José
- Flights from San Salvador to San José
- Flights from Chicago to San José
- Flights from San Francisco to San José
Popular routes
- Flights from Geneva to Miami
- Flights from Budapest to Amman
- Flights from Los Angeles to Cancún
- Flights from San Francisco to Kharkiv
- Flights from New York to Paris
- Flights from Copenhagen to Chicago
- Flights from Paris to Belgrade
- Flights from Columbus to Salt Lake City
- Flights from Las Vegas to Anchorage
- Flights from Madrid to Oslo
- Flights from Phoenix to Chicago
- Flights from Omaha to Oakland
- Flights from Chicago to Billings